The Link from ACR Systems allows one operator to control pan and tilt of your gimbal while another operates the camera handheld.
We're all a bit familiar with the Freefly MIMIC — The Link is similar that but more affordable, at $560 during NAB. It's compatible with almost any gimbal on the market by connecting straight to your gimbal's PMW protocol. See it in action here at the NAB convention floor in Vegas.
More of No Film School's coverage from the NAB showroom floor: